A processing jig for connecting rod of excavator

Abstract

The utility model belongs to the technical field of processing jigs, and discloses a processing jig for a connecting rod for an excavator. It comprises a bottom plate; a left positioning assembly and a right positioning assembly are arranged on the bottom plate, the left positioning assembly comprises a left positioning block, a middle threaded seat, and a left lower bolt seat, the middle threaded seat is arranged between the left positioning block and the left lower bolt seat, a jacking bolt is arranged on the middle threaded seat, and a middle upper jacking ring is arranged at the front end of the jacking bolt, the right positioning assembly comprises a rear pad, a right positioning block, and a right jacking threaded seat, a jacking ring is arranged on the side adjacent to the right positioning block and the rear pad, a fastening bolt B is arranged on the right jacking threaded seat, and a right jacking ring is arranged at the front end of the fastening bolt B; a pressure plate for covering and clamping a workpiece is arranged between the left positioning assembly and the right positioning assembly. The structure is simple, the operation is convenient, and one-time clamping and fixing are realized, so as to solve the problem of unstable coaxiality.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing jigs and relates to a processing jig for a connecting rod of an excavator. Background Art

[0002] The connecting rod is an accessory on the excavator. According to the assembly requirements, 2-Φ65H7, 2-Φ75H7, and Φ20 need to be processed on the product. The difficulty of processing is the coaxiality of 2-Φ65H7 and 2-Φ72H7. Because two-sided processing is required, the product needs to be rotated 180 degrees before processing, so the coaxiality is not easy to guarantee. There is an urgent need for a processing fixture that can achieve one-time clamping and fixation to solve the problem of unstable coaxiality. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned background technology and provide a processing fixture for a connecting rod for an excavator, which has a simple structure, is easy to operate, realizes one-time clamping and fixing, and solves the problem of unstable coaxiality.

[0004] The utility model solves the technical problem by adopting the following technical scheme: a processing jig for a connecting rod for an excavator, comprising a bottom plate; a left positioning assembly and a right positioning assembly are arranged on the bottom plate, the left positioning assembly comprises a left positioning block, a middle threaded seat, and a left lower bolt seat, the middle threaded seat is arranged between the left positioning block and the left lower bolt seat, a tightening bolt is arranged on the middle threaded seat, a middle upper tightening ring is arranged at the front end of the tightening bolt, the middle upper tightening ring is placed between the middle threaded seat and the left positioning block, a fastening bolt A is also arranged on the middle threaded seat, a middle lower tightening plug is arranged at the front end of the fastening bolt A; a fastening bolt A is arranged on the left lower bolt seat, and a middle lower tightening plug is arranged at the front end of the fastening bolt A;

[0005] The right positioning assembly includes a rear gasket, a right positioning block, and a right tightening threaded seat. The rear gasket is arranged between the right positioning block and the right tightening threaded seat. A tightening ring is arranged on the adjacent side of the right positioning block and the rear gasket. A fastening bolt B is arranged on the right tightening threaded seat, and a right tightening ring is arranged at the front end of the fastening bolt B. A pressure plate for covering and clamping the workpiece is arranged between the left positioning assembly and the right positioning assembly.

[0006] The pressing plate is provided with bolts C, and the pressing plate presses and fixes the workpiece on the bottom plate through the bolts C.

[0007] The left positioning block, the middle threaded seat and the left lower bolt seat are arranged on the bottom plate.

[0008] The rear pad, the right positioning block and the right tightening thread seat are arranged on the bottom plate. The distance between the rear pad and the right positioning block is equal to the distance between the rear pad and the right tightening thread seat.

[0009] The right positioning block is fixed to the base plate by bolt A.

[0010] The right tightening threaded seat is fixed to the base plate by bolt A.

[0011] The center threaded seat is fixed to the base plate by bolts A.

[0012] The rear pad is fixed to the base plate by bolts B.

[0013] The lower left bolt seat is fixed to the base plate by bolt A.

[0014] The left positioning block is fixed to the base plate by bolt A.

[0015] The bolt A is of model M10×100.

[0016] The bolt B is of type M6×40.

[0017] The bolt C is of type M12×120.

[0018] A nut C is provided at the front end of the fastening bolt B.

[0019] The middle lower top plug is provided with a nut A. The middle lower top plug is connected with the fastening bolt A through the nut A.

[0020] The middle thread seat is provided with a nut B. The middle thread seat is connected with the fastening bolt A through the nut B.

[0021] Furthermore, a base is provided under the bottom plate, and two ends of the base are respectively connected to the four-axis auxiliary disk and the four-axis main disk, and the four-axis auxiliary disk and the four-axis main disk are respectively connected to the rotary shaft of the processing equipment through the core shaft. The processing equipment is an existing equipment and is not particularly limited.

[0022] Furthermore, the jack bolt, bolt A, bolt B, bolt C, fastening bolt A, and fastening bolt B are all countersunk hexagonal bolts to avoid damage to the workpiece during loading and unloading.

[0023] Furthermore, the pressing plate is a rectangular plate.

[0024] Furthermore, the hardness of the left positioning block and the right positioning block are both above HRC60, which reduces wear and does not affect product precision.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The utility model provides a processing jig for connecting rods for excavators, which has a simple structure, is easy to operate, realizes one-time clamping and fixing, and solves the problem of unstable coaxiality. The two sides of the workpiece are processed on the same reference plate, and the processing is completed in one time, which can ensure the stability of processing of various dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0028] Figure 1 The utility model is a top view of a processing jig for a connecting rod for an excavator.

[0029] Figure 2 yes Figure 1 AA section view.

[0030] Figure 3 yes Figure 1 BB cross-sectional view.

[0031] Figure 4 yes Figure 1 EE cross-sectional view.

[0032] In the figure, 1. processing fixture, 2. bottom plate, 3. rear gasket, 4. pressure plate, 5. left positioning block, 6. right positioning block, 7. middle threaded seat, 8. right top tightening threaded seat, 9. right top tightening ring, 10. middle upper top tightening ring, 11. tightening bolt, 12. middle lower top tightening plug, 13. left lower bolt seat, 14. base, 15. bolt A, 16. bolt B, 17. bolt C, 18. nut A, 19. nut B, 20. nut C, 21. fastening bolt A, 22. fastening bolt B. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0034] Example 1

[0035] A processing jig for connecting rods for excavators, such as Figure 1-Figure 4 As shown, it includes a base plate 2; a left positioning component and a right positioning component are arranged on the base plate 2, the left positioning component includes a left positioning block 5, a middle threaded seat 7, and a left lower bolt seat 13, the middle threaded seat 7 is arranged between the left positioning block 5 and the left lower bolt seat 13, a tightening bolt 11 is arranged on the middle threaded seat 7, a middle upper tightening ring 10 is arranged at the front end of the tightening bolt 11, and the middle upper tightening ring 10 is placed between the middle threaded seat 7 and the left positioning block 5, a fastening bolt A 21 is also arranged on the middle threaded seat 7, and a middle lower tightening plug 12 is arranged at the front end of the fastening bolt A 21; a fastening bolt A 21 is arranged on the lower left bolt seat 13, and a middle lower tightening plug 12 is arranged at the front end of the fastening bolt A 21;

[0036] The right positioning assembly includes a rear gasket 3, a right positioning block 6, and a right tightening threaded seat 8. The rear gasket is arranged between the right positioning block 6 and the right tightening threaded seat 8. A tightening ring is arranged on the adjacent surface of the right positioning block 6 and the rear gasket 3. A fastening bolt B 22 is arranged on the right tightening threaded seat 8, and a right tightening ring 9 is arranged at the front end of the fastening bolt B 22. A pressure plate 4 for covering and clamping the workpiece is arranged between the left positioning assembly and the right positioning assembly.

[0037] The pressing plate 4 is provided with bolts C17, and the pressing plate 4 presses and fixes the workpiece on the base plate 2 via the bolts C17.

[0038] The left positioning block 5 , the middle threaded seat 7 , and the left lower bolt seat 12 are arranged on the base plate 2 .

[0039] The rear pad 3, the right positioning block 6, and the right top tightening thread seat 8 are arranged on the base plate 2. The spacing between the rear pad 3 and the right positioning block 6 is equal to the spacing between the rear pad 3 and the right top tightening thread seat 8.

[0040] The right positioning block 6 is fixed to the base plate 2 by bolts A15.

[0041] The right tightening threaded seat 8 is fixed to the base plate 2 by bolts A15.

[0042] The center threaded seat 7 is fixed to the base plate 2 by bolts A15.

[0043] The rear pad 3 is fixed to the base plate 2 by bolts B16.

[0044] The left lower bolt seat 13 is fixed to the base plate 2 by means of bolts A15.

[0045] The left positioning block 5 is fixed to the base plate 2 by means of bolts A15.

[0046] The bolt A15 model is M10×100.

[0047] The bolt B16 model is M6×40.

[0048] The bolt C17 model is M12×120.

[0049] The front end of the fastening bolt B 22 is provided with a nut C 20.

[0050] A nut A18 is arranged in the middle lower top tight plug 12. The middle lower top tight plug 12 is connected with the fastening bolt A21 through the nut A18.

[0051] A nut B19 is arranged in the middle thread seat 7. The middle thread seat 7 is connected with the fastening bolt A21 through the nut B19.

[0052] A base 14 is provided below the bottom plate 2, and two ends of the base 14 are respectively connected to the four-axis auxiliary disk and the four-axis main disk, and the four-axis auxiliary disk and the four-axis main disk are respectively connected to the rotary shaft of the processing equipment through the core shaft. The processing equipment is an existing equipment and is not particularly limited.

[0053] Tighten the bolt C17 to loosen the pressure plate 2, place the pressure plate 2 horizontally, place the workpiece on the bottom plate 2, place the head of the workpiece (one hollow cylindrical side) on the rear pad 3, tighten the fixing bolt B 22, so that the right top tightening ring 9 holds the workpiece close to the right positioning block 6; place the tail of the workpiece (two hollow cylindrical sides) on the front and rear ends of the middle threaded seat, place it on the bottom plate, tighten the top tightening bolt 11, so that the middle upper top tightening ring 10 holds the workpiece close to the left positioning block 5; tighten the fastening bolt A 21, clamp the workpiece through the middle lower top tightening plug 12; place the pressure plate 4 horizontally on the workpiece, and tighten the bolt C17 to fix the workpiece. Fix the entire fixture on the processing equipment and start processing.

[0054] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A processing jig for a connecting rod for an excavator, characterized in that: The invention comprises a bottom plate (2); a left positioning assembly and a right positioning assembly are arranged on the bottom plate (2); the left positioning assembly comprises a left positioning block (5), a middle threaded seat (7), and a left lower bolt seat (13); the middle threaded seat (7) is arranged between the left positioning block (5) and the left lower bolt seat (13); a tightening bolt (11) is arranged on the middle threaded seat (7); a middle upper tightening ring (10) is arranged at the front end of the tightening bolt (11); the middle upper tightening ring (10) is placed between the middle threaded seat (7) and the left positioning block (5); a fastening bolt A (21) is also arranged on the middle threaded seat (7); a middle lower tightening plug (12) is arranged at the front end of the fastening bolt A (21); a fastening bolt A (21) is arranged on the left lower bolt seat (13); a middle lower tightening plug (12) is arranged at the front end of the fastening bolt A (21); The right positioning assembly comprises a rear gasket (3), a right positioning block (6), and a right tightening threaded seat (8); the rear gasket is arranged between the right positioning block (6) and the right tightening threaded seat (8); a tightening ring is arranged on a surface of the right positioning block (6) adjacent to the rear gasket (3); a fastening bolt B (22) is arranged on the right tightening threaded seat (8); and a right tightening ring (9) is arranged at the front end of the fastening bolt B (22); and a pressing plate (4) for covering and tightening a workpiece is arranged between the left positioning assembly and the right positioning assembly.

2. A processing jig for connecting rods for excavators as claimed in claim 1, characterized in that: The pressing plate (4) is provided with bolts C (17), and the pressing plate (4) presses and fixes the workpiece on the base plate (2) through the bolts C (17).

3. A processing jig for connecting rods for excavators as claimed in claim 1, characterized in that: The left positioning block (5), the middle threaded seat (7) and the left lower bolt seat (13) are arranged on the bottom plate (2).

4. A processing jig for connecting rods for excavators as claimed in claim 1, characterized in that: The rear cushion block (3), the right positioning block (6) and the right tightening threaded seat (8) are arranged on the bottom plate (2).

5. The processing jig for connecting rod for excavator as claimed in claim 1, characterized in that: The distance between the rear pad (3) and the right positioning block (6) is equal to the distance between the rear pad (3) and the right tightening threaded seat (8).

6. The processing jig for connecting rod for excavator as claimed in claim 1, characterized in that: The rear pad (3) is fixed to the bottom plate (2) by bolts B (16).

Images